AstroNotes

This report includes classifications of two Type Ia SNe, one 91T-like SN Ia, one Type II supernova, and a variable star. All classifications were performed based on observations taken during the ESO …

This report includes classifications of five Type Ia SNe, one 91T-like SN Ia, one Type II supernova, and a galaxy. All classifications were performed based on observations taken during the ESO Summer…

This report includes classifications of 3 new Type II SNe and a reclassification of a supernova as Type II, which were done through observations taken in the course of the ESO Summer Research Program…

This report includes classifications of 5 Type Ia's, 1 Type Ia-91T, 3 Type II's, and 1 Galaxy spectrum.

This report includes classification of one Type Ia 91T-like supernova.

This report includes classifications of a Ia-CSM and a SN Ia.

We report the rapid, automatic UV/optical follow-up of the young Type II SN 2025qtt at d=38.5 Mpc, including Swift/UVOT observations starting just 6 minutes after its discovery by BTSbot-nearby. Our …

We report the BTSbot-nearby discovery and follow-up of SN 2025qpk, a young Type Ia SN at z=0.01377. BTSbot-nearby autonomously triggered Swift using the new urgency 0 mode, which enabled the Swift ob…

As part of the ongoing development of a SLSN identification pipeline for the Fink collaboration, we have identified AT 2021aeuj (ZTF19adcddzk) as being a candidate Extreme Nuclear Transients (ENT).

We report on the optical photometric follow-up of SN2025coe with RAPAS, a ProAm network using telescopes equipped with a set of filters meeting Gaia photometric bands.

We report ZTF observations of a fast, luminous, and blue transient, AT2025ngt (ZTF25aaurzyo). The spectroscopic redshift of the host galaxy is z = 0.097, implying a peak absolute extinction-corrected…

This report includes classifications of 7 Type Ia's, 5 Type II's., 1 Type Ic, 2 featurless SN, a CV and a Nova. We encourage followup observations.

Here we report on the bright and likely fast rising supernova candidate AT 2025ngs (ATLAS25gbi, ZTF25aauvber) in NGC 5961 (at a mean metric distance of 32.7 Mpc), detected by ATLAS and ZTF.

This report includes classifications of 1 Type 1a, 1 Type Ia-91T-like, 1 Type II, and 1 Type Ic. We encourage followup observations.

We report an FBOT candidate WFST0617iqnc (AT 2025mba) discovered by the WFST deep high-cadence ugr-bands survey.

This report includes classifications of 1 Type Ia, 1 Type II, 1 SN and 1 blue and featureless object. We encourage followup observations.

We report a fast rising supernova candidate WFST0614dwbc (AT 2025mbz) discovered by the WFST deep high-cadence ugr-bands survey.

This report includes 10 classifications. There are 7 Type Ia's, 2 Type II's, and 1 blue and featureless object. We encourage followup observations.

This report includes 17 classifications. There are 6 normal Type Ia's, 1 Super-Chandra Type Ia, 3 Ia-91T-like, 3 Type II's, 3 CVs, and 1 blue and featureless object. We encourage followup observation…

This report includes classifications of 4 Ia's, 2 II's, 3 CV's, 1 Ia-91T, and 1 Ia-CSM. We encourage followup observations.

This report includes classifications of 6 Type Ia's, 1 Type Ia-91bg-like, and 1 Type II. We encourage followup observations.

This report includes classifications of 3 Type Ia's, 2 Type Ia-91T-like, 1 Type II, 1 Type IIn, 1 featureless blue transient, and 1 Type Ic. We encourage followup observations.

We classify the optical re-brightening event towards AT 2021gqu as a peculiar Type Ia Supernova, based on optical spectroscopy.

This report includes classifications of 1 Type Ic-BL and 2 Type Ia's. We encourage follow-up observations.

This report includes classifications of 6 Type Ia's and 1 Type II SN. We encourage followup observations.

This report includes classifications of 2 Type II's, 1 Type Ia, 1 AGN, and 1 CV. We encourage follow-up observations.

We report the spectroscopic detection of a light echo from Type Ia Supernova 2021aefx at ~1200 days post maximum light using the Very Large Telescope.

This report includes classifications of two supernovae, a Type Ia and a superluminous Type IIn. We encourage followup observations.

This report includes classifications of 2 Type Ia's supernovae. We encourage followup observations.

This report includes classifications of two supernovae, a Type Ia and a Type IIn. We encourage followup observations.

This report includes classifications of 7 Type Ia's, 1 Type II, an AGN and a spectrum of a likely SN where strong galaxy emission inhibits a definitive classification. We encourage followup observati…

We have obtained an optical spectrum of SN 2025fwp, which shows it to be a young Type II supernova. The supernova exploded in the same galaxy as the Type Ia supernova SN 2019ako.

This report includes classifications of 4 Type Ia's, 1 Type II, 1 Type Ic and a CV

The BlackGEM Consortium announces the discovery of BGEM J132554.96-430603.3 / AT2025guz, a young (1 day limit), faint (q=20.15) transient located in the outskirts of the nearby giant elliptical galax…

This report includes classifications of 3 Type Ia supernova.

We have obtained an optical spectrum of SN 2025dyr, which shows it to be a young Type II supernova. The supernova occurred in the same host galaxy as the Type Ia supernova SN 2023lhq.

We report the optical non-detection of AT2025dup.

We report on the optical photometric follow-up of SN2024adhf/Gaia25aao conducted with the BHTOM.space global telescope network.

We report a fast rising supernova candidate WFST0529iump (AT 2025dvo) discovered by the WFST deep high-cadence ugr-bands survey.

We report a fast rising transient candidate WFST0532hscl (AT 2025dug) discovered by the 2.5-m Wide Field Survey Telescope (WFST) during its deep high-cadence ugr-bands survey.

We have obtained an optical spectrum of SN 2025ctp, which shows it to be a Type IIb supernova at maximum light. The supernova occurred in the same galaxy as the Type Ia supernova SN 2016ys.

We report the spectroscopic observation of Type Ia SN 2025bvm in NGC 4156 at TNG (Telescopio Nazionale Galileo, La Palma)

We report the identification of a rapidly fading optical transient in ZTF observations. A Gemini North spectrum shows a featureless blue continuum. There is a catalogued galaxy 3” away with a photome…

We report 330 supernova candidates discovered by the 2.5-m Wide Field Survey Telescope (WFST) during the first two months of its deep high-cadence ugr-bands survey.

We report early photometric detections from the Wide Field Survey Telescope deep high-cadence ugr-bands survey of 14 previously reported supernova/candidates.

This report includes classifications of 4 Type Ia supernovae

This report includes classifications of 3 Type Ia's, 1 Type II and 1 Type IIb supernova. SN2025bco is an infant Type II, showing strong flash ionisation features. We encourage followup observations.

This report includes classifications of 3 SNe Ia, 1 SN II, 1 SN IIb and 1 Galaxy. AT2025ayw is probably a CV, given the blue spectrum without any broad SN-like features, no obvious host galaxy and lo…

This report includes classifications of 8 Type Ia's, 4 Type II's. and 1 Type Ia 91T-like SN.

This report includes classifications of 5 type Ia, 1 Ia-91T and 1 SN II. AT2025atd shows a blue continuum and no obvious broad SN features, and thus its spectral type is unclear. We encourage followu…